Twin urn for making coffee and the like



Feb 19, 1952 F. c. EHRENRElcl-l ET AL 2,586,152

TwIN URN FOR MAKING COFFEE: AND THE LIKE Filed March 28, 195o 2 SHEETS-SHEET l INVENTORS:

xga/226% Feb. 19, 1952 F. c. EHRENREICH ET AL 2,586,152

TWIN URN FOR MAKING COFFEE AND THE LIKE .Filed March 28, 1950 2SHEETS-SHEET 2 Patented Feb. 19, 1952 i1-Nitro; STAT-ss mrEN-r K I2,586,152.

TWIN `URN nim.MAKING coFFEEiAND:

l THE LIKE; l,

nppiipauonrMai-nzs, 1950:, Aserial no. .152.304,

Thisinventicn relates toa twin urn for'niaking coffee and the like, Urnsofv this kind involvea Water heating tank whereinis Suspendedajpairofvurns each supporting a bag cntainihg. the ground coffee. Water isheated to the. boiling point in the tank and'alternativelysyphoned intothe urns, the beverage being brewed in one of them while it is beingdrawn from the other.

The admission of water into the tank and the syphoning thereof into theurns is controlled by valves. Present constructions are equippedwith avalve for controlling the supply of Water to the tank and with separatevalves for controlling the syphoning of the hot water into each of therespective urns. Thesevalves have to be separate- 1y manipulated tosecure-the desired results of having coffee brewedinone, of the urns asit is being drawn from the other. There is always the possibility thatone may forget to turn oi the Water control valve before opening thesyphoningvalve to one of the urns, in which eventthere may be serioustrouble.

The main objects of this invention, therefore, are to provide animproved twin urn construction in which a single pair'of Valvesgisindividually operable to control alloperations needed' for'admittingwater into'the tank, when required, and syphoning ofthe'heatedwater into the respective urns, as desired; to provide animproved valve arrangement of this kind which involves the operation ofonly one of the two valves for admitting a supply of water either to thetank or permitting syphoning thereof to one of the respective urns; toprovide an improved valve arrangement of this kind which precludes thepossibility of the water supply line being open to the tank when eitherone of the syphon lines is open; and to provide an improved valvearrangement of this kind which is economical to manufacture, easy toassemble on new or existing equipment, simple to operate, and positivein its results.

In the accompanying drawings:

Figure 1 is a front elevation, partly sectional along line I--I of Fig.2, of a twin urn for making coffee, equipped with an improved valvearrangement embodying this invention;

Fig. 2 is a plan view, partly sectional, of the equipment shown in Fig.1;

Fig. 3 is a vertical sectional view taken on line 3 3 of Fig. 1;

Fig. 4 is a somewhat diagrammatic perspective view, partly sectional, ofthe twin urn elsewhere illustrated herein; and

Fig. 5 is a detail in section, taken on line 5-5 of Fig. 1.

A twin urn for making coffee, Wherewith this improved valve arrangementhas been designed for use, comprises a tank T, suspending therein a pairof urns A and B, the supply of hot Water to. which is controlled by an'Aimproved arrange;- mentotvalves and Q Water which is supplied to thetank T through a supply, line IU maybe heated, by.. a, suitable.valve-controlled burner I Iv or otherwise. y

The.4 tank is of conventional. construction. It is .preferably` maderofAsheet metal andis horizontally .elongatedlwith roundedends.` The tank.Tis supported" by legs I2. on a. table or counter. 4Ventpipes, I3,located near the center, extend up through,l the tankto convey. 01Tapart of ,the heat from the burner II and facilitate the ,heating of thewater. as the heat passesv upy through the pipes tothe upper back4 of.the tank. The tank maybe.v equipped with the, conventional water. gageand-valve controlled'-outlety Il!-- and a .Steam safety, valveA I5.The-urns Aand' B are likewise of a conventional construction. Generally,each comprises a shell I6, a liningl I-1a truste-conical top ring i8,and a cover I9.

At their' upper ends, the shells IBare somewhat larger than the mainbody, as' shown at 2i), and are secured at the upper portion of the tankT (see Fig. 1). The linings I'I which are usually glass ,extendashortdis'tance above the upper. ends of themain body part of therespective shells I6. The bottomv of each shell and the liningtherewithin is provided with. a fitting 2`I for a mixing waterconnection 22 from the valve 8 or 9, as the case may be, and with adraft faucet 23 on which is mounted the usual gage 24.

Each frusto-conical ring I8 is provided with flanges 25 and 26 at itsopposite ends (see Fig. 1). The lower flange 25 telescopes with theupper end of the glass lining I1.. The upper ange 26 is flared outwardlyto form a ledge 21 which alfords support for the ring I8 on the top ofthe tank T, and also for the cover I9 within and below which is arrangeda spray head 28. A coffee bag (not shown) is suitably suspended withinthe lining I'I in a well-known manner. Each urn cover I9 has cylindricalsides with a convex top, and mounts a suitable knob or handle 29.

Each of the valves 8 and 9 is formed with cross channels a and b (seeFig. 5) extending through its housing and communication through eitherchannel, but only one at a time, is established by a rotatable valvemember 30 having a transverse port therethrough, rotation of the valvemember being controlled by a handle 3|. The valves 8 and 9 areinterposed in the water supply line I0, one being arranged adjacent eachof the respective urns A and B. The horizontal cross channels b` areinterconnected by a pipe 32 (see Fig. 4). The vertical channel a for thevalve 9 is connected by a pipe 33 to the water supply line I0 which iscontrolled by a valve 34 (see Fig. 2). The cross channel b for the valve8 is connected by a pipe 35 leading into the tank and mounting at itsinner end a. float-controlled inlet valve 36 of standard' construction.

The vertical cross channel a of each valve 8 and 9 is connected by apipe 3] to a point below the normal water line in the tank T and by apipe 38 to the spray head 28 for the respective urn A or B. The pipes,3'!V and 38 constitute a syphon whereby hot'water'isldrawn from the tankT into the respective urns A and B. The depth of the end of the pipe 3-1in `the tank determines the amount of water that will be syphoned intothe urns when the valve handles 3| are properly adjusted. The small pipe22 leads-from each of the Vertical cross channels a of the valves 8 and9 to the inlet iittings 2| for the respectiveA urns A and B.

'By this arrangement-of the cross channel valves 8 and 9 in the Watersupply line I0, the supply of water to the tank T is controlled byeither of these valves, and the syphoning of the hot lwater into eitherof the urns A or B is alternately controlled by its respective valve 8or 9. When either valve 8 or 9 is turned for syphoning Water into therespective urn A or B, the supply of water is cut off so that during thesyphoning action to either of the urns A or B there i s no possibilityof a fresh supply of water entering the tank T which, if admitted, wouldcheck the syphoning action.

' Variations and modifications in the details of the structure andarrangement of the parts may be resorted to Within the spirit andcoverage of the appended claim.

We claim:

A coiee making device comprising an elongated water heating tank havinga float-controlled cold'water inlet thereinto, a pair of percolatingurns arranged side by side in the tank each equipped with an overheadspray and a valve-controlled coffee draft outlet in the base thereofleading to the front exterior of the tank,

4 a pair of cross-channel valves arranged on the front of the tank eachvertically adjacent a different Yone of the respective draft outlets,with each of the valves having' a horizontal channel and a verticalchannel, a pipe extending across and within the front of the tank fromone valve to` the other to afford communication between the horizontalchannel in each of the valves, a pipe leading from the opposite end ofthe horizontal channel in' the one valve to the floatcontrolled waterinlet, a pipe connecting the opposite end of the horizontal channel inthe other valve with a source of cold water, pipes connecting thevertical channel in each valve with the respective urn spray and withthe interior ofthe tank at a point below the normal floatcontrolledWater level therein, and a rotatable valve'member in each of the valvesand controlling the channels therein to permit communication when in oneposition only between the horizontal channels and When in anotherposition only between the vertical channels whereby movement of therotatable valve member in either valve to a position establishingcommunication between an urn spray and the interior of the tank preventscommunication between the source of cold Water and the tank inlet.

FRANK C. EHRENREICH. HARRY W. ANDERSON.

REFERENCES CITED The following references are of record in the le ofthis patent:

UNITED STATES PATENTS Number Name Date 1,706,190 Shroyer Mar. 19, 1929v1,710,218 Kelly Apr. 23, 1929 1,796,518 Glascock Mar. 17, 19311,910,614 Fazan et al. May 23, 1933 2,544,836 Hotvedt Mar. 13, 1951

